playground:playground
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playground:playground [2014/01/21 19:09] – mgrant | playground:playground [2014/01/25 10:09] – mgrant | ||
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This is work in progress before it gets inserted into the main doc page. | This is work in progress before it gets inserted into the main doc page. | ||
- | * Exposure helpers: [[#Exposure to the right (ETTR)|ETTR]], | + | * Exposure helpers: [[Exposure to the right (ETTR)|ETTR]], |
====== Exposure to the right (ETTR) ====== | ====== Exposure to the right (ETTR) ====== | ||
- | Exposure to the right (ETTR) is a technique of setting the exposure of a scene such that few or no pixels are are over exposed (blown out) thus maximizing the information captured without loosing information to over-exposure. | + | Exposure to the right (ETTR) is a technique of setting the exposure of a scene such that few or no pixels are are over exposed (blown out) thus maximizing the information captured without loosing information to over-exposure. |
+ | |||
+ | For more information on ETTR, see these articles on Luminous Landscape: | ||
+ | * http:// | ||
+ | * http:// | ||
There are two methods (three really) of using ETTR: | There are two methods (three really) of using ETTR: | ||
- | The first method involves taking 2 images. | + | The first method involves taking 2 images. |
The second method uses the live view momentarily to run through a series of exposures until the exposure is correct without taking a photo. | The second method uses the live view momentarily to run through a series of exposures until the exposure is correct without taking a photo. | ||
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{{: | {{: | ||
- | Pressing the Q button brings you to the settings menu of the ETTR function: | + | Pressing the **Q** button brings you to the settings menu of the ETTR function |
- | + | ||
- | {{: | + | |
==== The Settings ==== | ==== The Settings ==== | ||
+ | |||
+ | {{: | ||
**Trigger mode**: Always ON, Auto Snap, Press SET, HalfS DblClick. | **Trigger mode**: Always ON, Auto Snap, Press SET, HalfS DblClick. | ||
- | * **Always on** means that every time you take a picture the image is displayed in the LCD monitor with an analysis of the image and the shutter speed and ISO are set for the next shot. | + | * **Always on** means that every time you take a picture the image is displayed in the LCD monitor with an analysis of the image and the shutter speed and ISO are set for the next photo. |
- | * **Auto | + | * **Auto |
- | * **Press SET** means that every time press the SET button the current scene is displayed in live view, the image is analyzed by stepping through a series of exposure settings. | + | * **Press SET** means that every time press the SET button the current scene is displayed in live view, the image is analyzed by stepping through a series of exposure settings. |
* **HalfS DblClick** | * **HalfS DblClick** | ||
For Timelapse set it to **Always on**. | For Timelapse set it to **Always on**. | ||
+ | |||
+ | With **Always on** and **Auto snap**, you should definitely enable Zebras and Histogram to see if the settings it choose are correct. | ||
**Slowest shutter**: 1/60 The slowest shutter that will allow for the current scene. . For a night time lapse set it to 30 seconds. | **Slowest shutter**: 1/60 The slowest shutter that will allow for the current scene. . For a night time lapse set it to 30 seconds. | ||
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==== The Advanced settings ==== | ==== The Advanced settings ==== | ||
+ | |||
+ | {{: | ||
**Exposure Target**: A general exposure target for the scene, | **Exposure Target**: A general exposure target for the scene, | ||
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==== Visual Feedback ==== | ==== Visual Feedback ==== | ||
- | If you want more visual feedback | + | If you want more visual feedback to see how the image is (and you will need it for **Always |
- | In the Overlay Tab you can scroll down to Histogram and press Q to configure: | + | In the **Overlay Tab**, first make sure **Global Draw** is: **On, all modes**. |
- | RAW EV indicator: OFF Here you can press the set button and select ETTR hint. This will display | + | Then in the **Overlay Tab** you scroll down to **Histogram** and press **Q** to configure: |
- | Also in the Overlay Tab you can scroll to Zebras, | + | **RAW EV indicator**: |
- | ===== Usage ===== | + | Also in the **Overlay Tab** you can scroll to **Zebras**, press **Q**, and make sure that **RAW zebras** are ON. The **RAW zebras** will show on the image itself to mark the areas where a color channel may be overblown. |
- | ETTR in RAW images | ||
- | If you do not have ML installed in your camera go here: | ||
- | RAW video & ML -- Beginners Guide and FAQ -- READ FIRST | ||
- | http:// | ||
- | 1. Go to Canon Menu a set Image Review: hold (This gives you a change to review the RAW histogram until you press half shutter to stop the preview, 2 sec is too quick to analyze the histogram but you can set it as desired NO LESS THAN 2 SEC! | + | ===== Setting it up ===== |
+ | |||
+ | ETTR in RAW images | ||
+ | |||
+ | 1. Go to Canon Menu and set Image Review: hold (This gives you a change to review the RAW histogram until you press half shutter to stop the preview, 2 sec is too quick to analyze the histogram but you can set it as desired NO LESS THAN 2 SEC! | ||
- | 2. Put the camera in manual M mode or Av mode (it makes no difference | + | 2. Put the camera in manual M mode or Av mode (either one since you must the aperture yourself), and set ISO to any number except in Auto. It wont work in auto! |
3. Press trash button to enter ML menu. | 3. Press trash button to enter ML menu. | ||
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4. Go to the Expo Tab and enable Auto ETTR by pressing set. | 4. Go to the Expo Tab and enable Auto ETTR by pressing set. | ||
- | 5. Press Q if you want to change ETTR details. | + | 5. Press **Q** if you want to change ETTR details. |
6. (optional) enable Global Draw | 6. (optional) enable Global Draw | ||
- | 6.1 Press Q and move to Overlay Tab. Make sure Global Draw in: On, all modes. | + | 6.1 Press **Q** and move to Overlay Tab. Make sure Global Draw in: On, all modes. |
7. (optional) enable Zebras | 7. (optional) enable Zebras | ||
- | 7.1 Scroll to Zebras, press Q, scroll to the bottom and select Use RAW zebras ON. | + | 7.1 Scroll to Zebras, press **Q**, scroll to the bottom and select Use RAW zebras ON. |
- | 7.2 Press Q | + | 7.2 Press **Q** |
8. (optional) enable the Histogram | 8. (optional) enable the Histogram | ||
- | 8.1 Scroll to Histogram and press Q | + | 8.1 Scroll to Histogram and press **Q** |
8.2. (optional) Scroll to RAW EV indicator and select ETTR hint by pressing set. | 8.2. (optional) Scroll to RAW EV indicator and select ETTR hint by pressing set. | ||
- | 8.3. Press Q | + | 8.3. Press **Q** |
12. Press trash button to exit ML menu. | 12. Press trash button to exit ML menu. | ||
- | 13. Frame you subject and set the aperture and shoot a test photo. | + | ===== Usage ===== |
+ | |||
+ | You are highly recommended to use a tri-pod or other support. | ||
+ | |||
+ | ==== Always On mode ==== | ||
+ | |||
+ | 1. Frame you subject and set the aperture | ||
+ | |||
+ | 2. Now look at the display and you should see the image with the histogram and the zebras in the over exposed areas (if you enabled them). | ||
+ | |||
+ | 3. Shoot another a photo and repeat to step 2 until your photo is not over exposed (few or no zebra lines, and the exposure curve up to the right side of the graph). | ||
+ | |||
+ | ==== Auto snap mode ==== | ||
+ | |||
+ | 1. Frame you subject and set the aperture (for the DOF). | ||
+ | |||
+ | 2. Press the shutter. | ||
+ | |||
+ | 3. Now look at the display and you should see the second image with the histogram and the zebras in the over exposed areas (if you enabled them). | ||
+ | |||
+ | ==== Press Set and HalfS DblClick modes ==== | ||
+ | |||
+ | 1. Frame you subject and set the aperture (for the DOF). | ||
+ | |||
+ | 2. Press the Set button or quickly half-press the shutter release twice depending on the mode. | ||
+ | |||
+ | 3. The camera will go into live view mode and will step through a series of exposures trying to find the proper exposure for the scene and then the camera will go out of live view mode. | ||
+ | |||
+ | 4. Do not recompose your shot. Shoot the scene. | ||
- | 14. Now look at the display and you should see the image. | + | ==== Using the histogram ==== |
- | The new important features that you are looking | + | Inside this histogram |
- | RAW histogram | + | Inside the RAW histogram |
- | a. Inside this histogram you may see near the top-left of the graph, in white lettering, the letter E followed by a number which represents how far you can go, in EV numbers, to reach ETTR, i.e E1.2 | + | If there are overexposed areas you will see RAW Zebras in the color which is overblown. |
- | b. Inside the RAW histogram near the bottom you may see colored circles with numbers inside which represent the overblown channels (R, G, B) and the number of EV of over-exposure. | + | |
- | c. If there are overexposed areas you will see RAW Zebras in the color which is overblown. | + | |
- | 13. Take another picture without changing the scene and you will see how the camera settings are adjusted to meet the ETTR requirements. | + | Take another picture without changing the scene and you will see how the camera settings are adjusted to meet the ETTR requirements. |
If the camera beeps it means that the photo is out of specs and you should shoot again. | If the camera beeps it means that the photo is out of specs and you should shoot again. | ||
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If you also enabled RAW zebras via Global draw, you will also see, if any, areas of the image are over-exposed. | If you also enabled RAW zebras via Global draw, you will also see, if any, areas of the image are over-exposed. | ||
+ | |||
+ | ===== References ===== | ||
+ | |||
+ | * http:// | ||
+ | * http:// | ||
+ | * http:// |
playground/playground.txt · Last modified: 2022/05/13 16:55 by WBOX4